1.
Differentiate virtual image and real image ?
All the chemical equations must be balanced. Why ? Guess and write.
2.
3.
Bee sting leaves a chemical substance that causes pain and irritation.
Answers
Answer:
answer 1- virtual image cannot be obtained on a screen whereas real image can be obtained on screen.
Answer:
1. A real image and a virtual image are different forms of image. The main difference between real and virtual images lies in the way in which they are produced. A real image is formed when rays converge, whereas a virtual image occurs where rays only appear to diverge.
2. The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation happens when the number of the different atoms of elements on the reactants side is equal to that of the products side. Balancing chemical equations is a process of trial and error.
3.Histamine makes up 0.9% of venom, and causes itching and pain at the site of the sting. The acids present, which include formic, hydrochloric and orthophosphoric acids, are now believed to be much less important in causing pain than was previously thought
Explanation:
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